Stuart Kauffman’s At Home in the Universe unveils a scientific revolution centered on spontaneous order in complex systems. Kauffman argues that complexity itself triggers self-organization, revealing life as a natural outcome rather than a chance event. From cell development to cultural evolution, he explores how this principle shapes diverse phenomena. Praised as a visionary by Stephen Jay Gould and Philip Anderson, Kauffman’s work extends Darwin’s theory and offers profound insights into the essence of life.

This article proposes a new definition of life as chemical systems that achieve catalytic closure, constraint closure, and spatial closure. It argues that the emergence of such living systems is an expected phase transition in the evolving universe. However, the ever-creative evolution of life thereafter cannot be explained by physics alone, showing the limits of reductionism. Life is a double miracle—expected yet unexplainable.